【英文标准名称】:Ammoniumnitrateforindustrialuse;Determinationofcontentofsulphurcompounds;Methodbyreductionandtitrimetry
【原文标准名称】:工业用硝酸铵硫化合物含量的测定还原滴定法
【标准号】:ISO3329-1975
【标准状态】:作废
【国别】:国际
【发布日期】:1975-07
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC47
【标准类型】:()
【标准水平】:()
【中文主题词】:化学分析;硫化合物;容量分析;硝酸铵;化学分析和试验;含量测定;硫酸盐;硫
【英文主题词】:volumetricanalysis;determinationofcontent;chemicalanalysis;sulphurcompounds;ammoniumnitrate;sulphur;ammoniumnitrates;sulphates;chemicalanalysisandtesting
【摘要】:Applicabletoproductsthecontentofwhich,expressedassulphate,isequaltoormorethan0.0005%(m/m).Heatingofatestportioninthepresenceofsodiumcarbonate,inafume-cupboard,untiltheammoniumsaltshavebeeneliminated(about300?C).Reductionofthesulphureousresiduetosulphidesbyamixtureofhydriodicacidandhypophosphorusacid.Absorptionofthehydrogensulphideevolvedinamixtureofsodiumhydroxidesolutionandacetone.Titrationofthesulphidewithstandardvolumetricmercury(II)acetatesolutioninthepresenceofdithizoneasindicator.Atypicalapparatusforreductionanddistillationisshowninafigure.
【中国标准分类号】:G10
【国际标准分类号】:0520;5603
【页数】:4P;A4
【正文语种】:英语